Claek andebson



(No Model.) Y

O. ANDERSON.

BAKING POWDER MIXER. 7 345-204. Patented July 6, 1886.

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UNITED TATES CLARK ANDERSON, OF HOLDEN, MISSOURI.

BAKING-POWDER MIXER.

SPECIFICATION forming part of Letters Patent No. 345,204, dated July 6,1886.

Application filed March 3, 1886.

.To all whom it may concern.-

Be it known that I, CLARK ANDERSON, a citizen of the United States,residing at Holden, in the county of Johnson and State of Missouri, haveinvented certain new and useful Improvements in Baking-Powder Mixers;and I do declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same, reference being hadto the accompanying drawings, and to the letters and figures ofreference marked thereon, which form a part of this specification.

Figure l is an external perspective view of my improved baking-powdermixer. Fig. 2 is a vertical section taken in a central plane lengthwisethrough the mixer. Fig. 3 is a vertical cross-section through thedevice.

This invention relates to an improved portable device, which isespecially designed for disintegrating and mixing baking-powders, aswill be fully understood from the following description,when taken inconnection with the annexed drawings.

Referring to the drawings by letters, A designates a rectangular box,provided with an arched tightly-fitting cover, A, and suitablefastenings therefor; also with a sliding drawer, B, for receiving thefinished baking-powder as it falls from a rotating mixing-drum, O.Thejournals D D of this drum have their bearings between the body of themixing-chest and its cover, so that when the latter is lifted the drumcan be readily removed for charging with the powders to be treated, andfor other purposes. A crank-handle, E, is keyed on one of the journalsof the mixing-drum, by which it can be conveniently rotated wheninclosed in its chest.

F F designate two circular drum-heads of equal diameter. These heads areconnected rigidly together by means of narrow fiat ribs G G. The innerseries of ribs or beaters, G, are arranged equidistant from each otherand equidistant from the circumferential edges of the heads F F, andthey are also arranged with their broad fiat sides radial to the axis ofthe drum-heads, as clearly shown in Fig. 3 of the annexed drawings.Surrounding the ribs or beaters G, and suitably secured thereto, is awire screen, H, of a givensize of meshes, through which the powdersfirst pass. The outer series of ribs or beaters, G, are simi- Serial No.193,912. (No model.)

larly arranged to the series G, and are surrounded by a wire screen, I,having a finer grade of meshes than the screen H, as indicated in Figs.2 and 3.

It will be observed that there is a door, a, through one of thedrum-heads, provided with a suitable cover, and designed as thefeedpassage for supplying the powders within the inner screen, H.

When the drum 0 is charged and inclosed in its chest, it is'rotated moreor less rapidly, and the powders are beaten, screened, disintegrated,and intimately mixed, after which they fall in a merchantable conditioninto the drawer B.

I may employ in a single drum, C, more than two different grades ofscreens; but for all practical purposes I find two sufficient.

It will be observed that I employ rectangular or flat-sided screenshaving broad beating-blades arranged within them,which blades serve torigidly secure the two circular heads together. They also serve assupports for the wire screens, and they serve as beaters fordisintegrating the lumps and mixing the powders. By means of the archedcover A no angles for the lodgment of the powders are afforded. Twoscreens having meshes of different sizes are used for the purpose ofpreventing balling of the powders, which would occur if only a singlescreen were used. The free powders in the first or inside screen arepartially mixed therein and allowed to escape rapidly into the spacebetween the two screens, where the mixing is completed, and the powdersallowed to escape through the outer screen. The powders, which are moreor less balled, are temporarily arrested in the inside screen until theyare thoroughly disintegrated, after which they pass through the twoscreens.

Having described my invention, I claim A baking-powder mixer comprisingtwo quadrangular screens arranged one within the other, the circularheads, the supporting, mixing, and beating blades secured to said heads,the short journals D D, and the portable chest provided with a movablearched cover and a drawer, substantially as specified.

In testimony whereof I affix my signaturein presence of two witnesses.

CLARK ANDERSON.

Witnesses:

FRED HEBERLING, J. U. STRoDE.

